Home / 643,370.74-964,726.56-339,927.80

Finding the Fourth Proportional to 643,370.74, 964,726.56 and 339,927.80

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Solution

The fourth proportional to 643,370.74, 964,726.56 and 339,927.80 is: 509,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,370.74 : 964,726.56 = 339,927.80 : x
  2. Step 2: Convert to fraction form
    643,370.74/964,726.56 = 339,927.80/x
  3. Step 3: Cross multiply
    643,370.74x = 964,726.56 × 339,927.80
  4. Step 4: Simplify right side
    643,370.74x = 327,937,372,318.74
  5. Step 5: Solve for x
    x = 327,937,372,318.74/643,370.74
  6. Step 6: Final answer
    x = 509,717.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.